Lock Closed

on . Posted in Valve

Lock closed, abbreviated as LC, is used on valves that must be closed during normal operating conditions.  A valve is termed "Lock Closed" when it is required by the applicable code, safety protocols or standard operating conditions.

Examples of where would this be used would be on a blow down valve or on a bleed valve on a double block and bleed assembly.

Piping Designer Logo 1

Tags: Valve Safety Instrumentation and Controls